text: /* USER CODE BEGIN Header */
  /**
    ******************************************************************************
    * @file           : main.c
    * @brief          : Main program body
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under BSD 3-Clause license,
    * the "License"; You may not use this file except in compliance with the
    * License. You may obtain a copy of the License at:
    *                        opensource.org/licenses/BSD-3-Clause
    *
    ******************************************************************************
    */
  /* USER CODE END Header */
  
  /* Includes ------------------------------------------------------------------*/
  #include "main.h"
  
  /* Private includes ----------------------------------------------------------*/
  /* USER CODE BEGIN Includes */
  #include <stdio.h>
  
  /* USER CODE END Includes */
  
  /* Private typedef -----------------------------------------------------------*/
  /* USER CODE BEGIN PTD */
  
  /* USER CODE END PTD */
  
  /* Private define ------------------------------------------------------------*/
  /* USER CODE BEGIN PD */
  /* USER CODE END PD */
  
  /* Private macro -------------------------------------------------------------*/
  /* USER CODE BEGIN PM */
  
  /* USER CODE END PM */
  
  /* Private variables ---------------------------------------------------------*/
  ADC_HandleTypeDef hadc1;
  
  TIM_HandleTypeDef htim3;
  
  UART_HandleTypeDef huart1;
  
  /* USER CODE BEGIN PV */
  #define BLINK_TIMER 100
  #define PWD_PERIOD  10
  #define TIMER_PERIOD 20000
  #define MAX_PWM           1500
  
  uint32_t counter = BLINK_TIMER;
  uint16_t pwm = 0;
  volatile uint8_t  rx_temp[1] = {0};
  volatile uint8_t  rx_flag = 0;
  volatile uint8_t  recieved_cmd = 0;
  
  
  #define CMD_READ_ADC      'A'
  #define CMD_ECHO          'E'
  #define CMD_PWM_PLUS      '+'
  #define CMD_PWM_MINUS     '-'
  
  
  void sample_chanel(void);
  
  void cmd_parse_command(void)
  {
  	if (!rx_flag)  return;
  
  	rx_flag = 0;
  
  	switch(recieved_cmd){
  	case CMD_READ_ADC :
  				sample_chanel();
  				break;
  	case CMD_ECHO :
  				printf("echo \r\n");
  				break;
  	case CMD_PWM_PLUS :
  
  				if ((pwm +10) <= MAX_PWM)
  					pwm+=10;
  				printf("PWM is [%d] \r\n", pwm);
  				htim3.Instance->CCR3 = pwm;
  				break;
  	case CMD_PWM_MINUS :
  				if ((pwm - 10) >= 0)
  					pwm-=10;
  				printf("PWM is [%d] \r\n", pwm);
  
  				htim3.Instance->CCR3 = pwm;
  				break;
  
  	default: break;
  	}
  
  
  }
  
  
  void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
  {
  	if (huart->Instance  ==  USART1)
  	{
  		__HAL_UART_CLEAR_OREFLAG(huart);
  		if ((rx_temp[0] != '\r'  && rx_temp[0] != '\n')){
  			rx_flag = 1;
  			recieved_cmd = rx_temp[0];
  		}
  		HAL_UART_Receive_IT(huart, (uint8_t *)rx_temp, 1);
  	}
  }
  
  void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
  {
  	if (htim->Instance == TIM3) {
  		if (counter)counter--;
  
  		if (counter == 0) {
  			counter = BLINK_TIMER;
  			 GPIOC->ODR ^= GPIO_PIN_13;
  		}
  	}
  }
  
  void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
  {
  	if (GPIO_Pin == GPIO_PIN_12){
  
  	}
  }
  
  void sample_chanel(void)
  {
  
  	HAL_ADC_Start(&hadc1);
  	HAL_ADC_PollForConversion(&hadc1, 200);
  	uint32_t adc_value= HAL_ADC_GetValue(&hadc1);
  	HAL_ADC_Stop(&hadc1);
  
  	printf("adc value is  [%4lx]\r\n",adc_value);
  
  }
  /* USER CODE END PV */
  
  /* Private function prototypes -----------------------------------------------*/
  void SystemClock_Config(void);
  static void MX_GPIO_Init(void);
  static void MX_ADC1_Init(void);
  static void MX_TIM3_Init(void);
  static void MX_USART1_UART_Init(void);
  /* USER CODE BEGIN PFP */
  
  /* USER CODE END PFP */
  
  /* Private user code ---------------------------------------------------------*/
  /* USER CODE BEGIN 0 */
  
  /* USER CODE END 0 */
  
  /**
    * @brief  The application entry point.
    * @retval int
    */
  int main(void)
  {
    /* USER CODE BEGIN 1 */
  	setvbuf(stdout,0, _IOLBF, 0);
  
    /* USER CODE END 1 */
  
    /* MCU Configuration--------------------------------------------------------*/
  
    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();
  
    /* USER CODE BEGIN Init */
  
    /* USER CODE END Init */
  
    /* Configure the system clock */
    SystemClock_Config();
  
    /* USER CODE BEGIN SysInit */
  
    /* USER CODE END SysInit */
  
    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_ADC1_Init();
    MX_TIM3_Init();
    MX_USART1_UART_Init();
    /* USER CODE BEGIN 2 */
  	HAL_TIM_Base_Start_IT(&htim3);
  	//uint32_t loop_counter = 1000;
  	HAL_UART_Receive_IT(&huart1, (uint8_t * )rx_temp, 1);
  	HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_4);
  
    /* USER CODE END 2 */
  
    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    {
      /* USER CODE END WHILE */
  
      /* USER CODE BEGIN 3 */
  	cmd_parse_command();
    }
    /* USER CODE END 3 */
  }
  
  /**
    * @brief System Clock Configuration
    * @retval None
    */
  void SystemClock_Config(void)
  {
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
    RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  
    /** Initializes the CPU, AHB and APB busses clocks
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
      Error_Handler();
    }
    /** Initializes the CPU, AHB and APB busses clocks
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
    {
      Error_Handler();
    }
    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
    PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV2;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }
  }
  
  /**
    * @brief ADC1 Initialization Function
    * @param None
    * @retval None
    */
  static void MX_ADC1_Init(void)
  {
  
    /* USER CODE BEGIN ADC1_Init 0 */
  
    /* USER CODE END ADC1_Init 0 */
  
    ADC_ChannelConfTypeDef sConfig = {0};
  
    /* USER CODE BEGIN ADC1_Init 1 */
  
    /* USER CODE END ADC1_Init 1 */
    /** Common config
    */
    hadc1.Instance = ADC1;
    hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
    hadc1.Init.ContinuousConvMode = DISABLE;
    hadc1.Init.DiscontinuousConvMode = DISABLE;
    hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    hadc1.Init.NbrOfConversion = 1;
    if (HAL_ADC_Init(&hadc1) != HAL_OK)
    {
      Error_Handler();
    }
    /** Configure Regular Channel
    */
    sConfig.Channel = ADC_CHANNEL_0;
    sConfig.Rank = ADC_REGULAR_RANK_1;
    sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN ADC1_Init 2 */
  
    /* USER CODE END ADC1_Init 2 */
  
  }
  
  /**
    * @brief TIM3 Initialization Function
    * @param None
    * @retval None
    */
  static void MX_TIM3_Init(void)
  {
  
    /* USER CODE BEGIN TIM3_Init 0 */
  
    /* USER CODE END TIM3_Init 0 */
  
    TIM_ClockConfigTypeDef sClockSourceConfig = {0};
    TIM_MasterConfigTypeDef sMasterConfig = {0};
    TIM_OC_InitTypeDef sConfigOC = {0};
  
    /* USER CODE BEGIN TIM3_Init 1 */
  
    /* USER CODE END TIM3_Init 1 */
    htim3.Instance = TIM3;
    htim3.Init.Prescaler = 8;
    htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
    htim3.Init.Period = 10000;
    htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
    htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
    if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
    {
      Error_Handler();
    }
    sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
    if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
    {
      Error_Handler();
    }
    if (HAL_TIM_PWM_Init(&htim3) != HAL_OK)
    {
      Error_Handler();
    }
    sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
    sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
    if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
    {
      Error_Handler();
    }
    sConfigOC.OCMode = TIM_OCMODE_PWM1;
    sConfigOC.Pulse = PWD_PERIOD;
    sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
    sConfigOC.OCFastMode = TIM_OCFAST_ENABLE;
    if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN TIM3_Init 2 */
  
    /* USER CODE END TIM3_Init 2 */
    HAL_TIM_MspPostInit(&htim3);
  
  }
  
  /**
    * @brief USART1 Initialization Function
    * @param None
    * @retval None
    */
  static void MX_USART1_UART_Init(void)
  {
  
    /* USER CODE BEGIN USART1_Init 0 */
  
    /* USER CODE END USART1_Init 0 */
  
    /* USER CODE BEGIN USART1_Init 1 */
  
    /* USER CODE END USART1_Init 1 */
    huart1.Instance = USART1;
    huart1.Init.BaudRate = 115200;
    huart1.Init.WordLength = UART_WORDLENGTH_8B;
    huart1.Init.StopBits = UART_STOPBITS_1;
    huart1.Init.Parity = UART_PARITY_NONE;
    huart1.Init.Mode = UART_MODE_TX_RX;
    huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart1.Init.OverSampling = UART_OVERSAMPLING_16;
    if (HAL_UART_Init(&huart1) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN USART1_Init 2 */
  
    /* USER CODE END USART1_Init 2 */
  
  }
  
  /**
    * @brief GPIO Initialization Function
    * @param None
    * @retval None
    */
  static void MX_GPIO_Init(void)
  {
    GPIO_InitTypeDef GPIO_InitStruct = {0};
  
    /* GPIO Ports Clock Enable */
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
  
    /*Configure GPIO pin Output Level */
    HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);
  
    /*Configure GPIO pin : PC13 */
    GPIO_InitStruct.Pin = GPIO_PIN_13;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
  
    /*Configure GPIO pin : PB0 */
    GPIO_InitStruct.Pin = GPIO_PIN_0;
    GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
  
    /* EXTI interrupt init*/
    HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(EXTI0_IRQn);
  
  }
  
  /* USER CODE BEGIN 4 */
  
  /* USER CODE END 4 */
  
  /**
    * @brief  This function is executed in case of error occurrence.
    * @retval None
    */
  void Error_Handler(void)
  {
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
  
    /* USER CODE END Error_Handler_Debug */
  }
  
  #ifdef  USE_FULL_ASSERT
  /**
    * @brief  Reports the name of the source file and the source line number
    *         where the assert_param error has occurred.
    * @param  file: pointer to the source file name
    * @param  line: assert_param error line source number
    * @retval None
    */
  void assert_failed(uint8_t *file, uint32_t line)
  {
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
       tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */
  }
  #endif /* USE_FULL_ASSERT */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  